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- Title
Expression of cyclins A and D and p21<sup>(waf1/cip1)</sup> proteins in renal cell cancer and their relation to clinicopathological variables and patient survival.
- Authors
Aaltomaa, S; Lipponen, P; Ala-Opas, M; Eskelinen, M; Syrjänen, K; Kosma, V-M
- Abstract
We have studied 118 renal cell carcinomas to analyse the expressions of cyclins A and D1 and p21[SUP(waf1/cip1)], and their relationship to clinical and histopathological parameters as well as to clinical outcome. Cyclins A and D1 and cyclin-dependent kinase inhibitor p21[SUP(waf1/cip1)]were not expressed in normal renal tissue. Staining signals of cyclin D1 and p21[SUP(waf1/cip1)]were always nuclear but cyclin A was also expressed in the cytoplasm of the tumour cells. The mean (range) fractions of cyclin A, cyclin D1 and p21[SUP(waf1/cip1)]-positive tumour cells were 2.2% (range 0-20%), 23.3% (range 0-90%) and 6.8% (range 0-70%) respectively. The expression of cyclin A was related to venous invasion, high nuclear grade, high mitotic rate, high Ki-67 and high PCNA expressions (P ≤ 0.006 for all). The expression of cyclin D1 was linked with age over 65 years, low nuclear grade and high p53 expression (P ≤ 0.05 for all). An inverse correlation was present between p21[SUP(waf1/cip1)]and cyclin D1 (P = 0.011). Cyclin A predicted survival in the entire study group (P = 0.0014), in T1-4/N0-2/M0 (P = 0.0007) and in T1-2/N0/M0 tumours (P = 0.0007). Cyclin A was also a powerful predictor of disease-free survival in T1-4/N0/M0 (P = 0.0027) tumours (P = 0.0007). Cyclin D1 and p21[SUP(waf1/cip1)]were not significantly related to survival or disease-free survival in any of the groups. In the entire material the independent prognostic factors were the presence of distant metastases (relative risk (RR) 5.16, P < 0.001), T category (RR 2.68, P < 0.001), Ki-67 expression (RR 1.02,P = 0.026) and cyclin A expression (RR 1.12, P = 0.001). The independent predictors in T1-4/N0/M0 tumours were T-category (RR 2.67, P = 0.001) and cyclin A (RR 1.21, P < 0.001), and in T1-2/N0/M0 tumours the only significant predictor was cyclin A (RR 1.19, P = 0.0002). In renal cell carcinoma, cyclin A is a powerful and independent prognostic factor in all clinical stages of the disease, whereas...
- Publication
British Journal of Cancer, 1999, Vol 80, Issue 12, p2001
- ISSN
0007-0920
- Publication type
Academic Journal
- DOI
10.1038/sj.bjc.6690634